Add NewClientWithKMS for AWS KMS client. This allows users to create Tink KMS client from user constructed AWS client (e.g. fake client for testing, or client created with self-managed credential key/id).
Add NewClientWithKMS for AWS KMS client. This allows users to create Tink KMS client from user constructed AWS client (e.g. fake client for testing, or client created with self-managed credential key/id).

PiperOrigin-RevId: 288516351

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